Improvement in loom-harness-operating mechanisms



ROBERT BURNS GOODYEAR, OF WILMINGTON, DELAWARE.

IMPROVEMENT IN LOOM-.HARNESS-OPERATING MECHANISMS.

Specification forming part of Letters Patent No. 119,459, dated October3, 1871.

To all whom it may concern:

Beit known that I, ROBERT BURNs GOODYEAR, of Wilmington, Delaware, haveinvented anew and useful Treadle-Motion for Tappet-Looms for Twilling,of which motion the following is a specication:

The object of my invention is the adaptation of looms to Weaving goodsface-side up or down, as desired, without employing complicatedstrapping, such as has been employed to draw the heddle-leaves up ordown. My invention consists: First, of a lifting-lever, in combinationwith atreadle having pivoted thereon a trigger-shaped treadle-shoe, allas hereinafter described. Second, of a lifting-lever, in combinationwith two or more of said treadle-shoes and treadles and certain fixedadjustable tappets, all as hereinaf ter described.

In the drawing, Figure l represents a perspective view of a loom-frameprovided with my devices, which are shown in detail, enlarged in theVother figures 5 Fig. 2 representing the lifting-lever; Fig. 3, theadjustable tappets or cams on Vtheir shaft; Fig. 4, one of the severalsimilar treadle-shoes; and Fig. 5, one of the several similar treadles'employed.

In Fig. l, a is the loom-frame; c, pivoted levers for raising theheddles up; d, similar levers for drawing the heddles down, the twoseries of levers being connected by the wires or straps e and f. h h1 h2are the treadles which work on a shaft or pin, i. j is thedriving-shaft. 7c is the pinion on the driving-shaftj gearing into thetappet or cam-wheel m. n nl n2 are the tappets. All these parts are ofordinaryconstruction. o, Figs. 1 and 2, is the lifting-lever, which isrigidly attached to the shaft '5. p, Figs. l and 2, is a crank on 4thedrvingshaft. w is the crank-arm which carries the projection wforsquaring or bringing into even line the treadles h h1 h2 when the shedsare closed. The crank-arm w is attached by a iiexible joint to one armof the two-arm lever y. The other arm of the lever y is attached by ashort link or toggle-joint z to the lower end of the lifting-lever o togive the required motion to this lever. The lifting-lever o is providedwith the arm q, which acts on the projectionsrof the treadle-shoes, oneof which projections is shown in Figs. l and 4. s s1 s2, Fig. l, are thetreadle-,shoes They are alike, Fig. 4 being a representation of each ofthem. The shoes are pivoted to the treadles respectively, as at w, Fig.5, one shoe for each treadle, under the' tappets, and are each madeheavier on one side, as at t, Fig. 4, so that the projections r arecaused by gravity to move in the way of the arm q of the lifting-lever.

As the tappets turn they come in contact with the treadleshoes attachedto the opposite treadles respectively, and press the treadle-shoesagainst the treadles, which are then moved on by the continued motion ofthe tappets. The lower or free end of the lifting-lever o is raisedl andlowered by the crank Aw operating through the levers y and z', causingthe arm q ofthe lifting-leverto come in contact with the projections ron such of the treadle-shoes as the tappets have not pressed out of itsWay. By increasing or decreasing the number of treadles (each providedwith a treadleshoe) and tappets and correspondingly altering the size ofthe pinion k, the loom can be adapted to the production of varioustwills.

I claim- 1. The lifting-lever o, rigidly attached to the shaft i, incombination with the treadle h having the movable treadle-shoe s pivotedthereon, all constructed and operating in the manner and for thepurposesubstantially as set forth.

2. The lifting-lever o, in combination with the two or more shoes, suchas s s1 s2, two or more treadles, such as h h1 h2, and the correspondingtappets or cams, such as n n1 n2, together constituting a treadle-motionfor looms, all constructed and operating as set forth.

Witnessesl: ROBERT B. GOODYEAR.

THos. A. BURTT, M. F. WALroN. (60)

